public class Duck extends Animal implements IFly,IRun,ISwim{

    public Duck(String name) {
        super(name);
    }
    @Override
    public void eat() {
        System.out.println(this.name+"正在吃虫子");
    }

    @Override
    public void fly() {
        System.out.println(this.name+"正在飞");
    }

    @Override
    public void run() {
    System.out.println(this.name+"正在用两只脚跑");
    }

    @Override
    public void swim() {
    System.out.println(this.name+"正在游泳！");
    }
}
